Critically Endangered
Hainan black crested gibbon
Nomascus hainanus
Hainan black crested gibbon is a primate in the family Hylobatidae (order Primates) — Nomascus hainanus, recorded as Critically Endangered and tied to China.
The primate
Hainan black crested gibbon is a primate in the family Hylobatidae (order Primates) — Nomascus hainanus.
Range and habitat
The Hainan gibbons reside in three different types of forests on the island. Their main area of occupancy is known as the primary forest (Old-growth forest). Within the primary forest the gibbons typically live in trees that are ten meters or taller.
The Hainan black-crested gibbon, also called the Hainan gibbon, is a Critically Endangered species of gibbon found only on Hainan Island, in the South China Sea. The recommendations for action focused on several factors, the first being the mitigation of habitat loss by increasing and better equipping patrols of the island to dissuade illegal loggers.
Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.
Breeding
The few remaining gibbons exhibit polygynous relationships. Small families typically consist of one breeding male, two mature females, and their offspring. It has been observed that not all sexually mature females in the wild are breeding, even so, the reasons for this are unclear.
The breeding characteristics for the Hainan gibbon do not lend themselves to rapid population growth.
In crisis
In response to the declining population of Hainan gibbons, a collaborative status survey and conservation plan was published in 2003 and updated in 2005. Greenpeace has been calling on Hainan to better enforce its laws on poaching and logging.
CITES lists this taxon on Appendix I. Confirm the current appendix on the CITES checklist.
Hainan black crested gibbon is Critically Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.
Sources
Written for this catalog from the English Wikipedia article on Hainan black crested gibbon, Wikidata item Q960477. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.
